New ways have been found to prevent the river ______.
A.nottobepollutedB.againstpollutingC.frompollutingD.frombeingpolluted...
A. not to be polluted B. against polluting C. from polluting D. from being polluted
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答案D 固定词组。Prevent sb (from) doing sth阻止某人做某事；句意：新的方法已经被发现来阻止河流被污染。 查看原帖>>
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